Hmm, seems I did pretty well in the Information Olympiad
(however you spell it) and they want me to goto the final in
Cambridge. I wonder how I'm getting there.

I found this in No Logo last night:

The most creative response came from students at the University
of Toronto. A handful of undergraduates landed part-time jobs with
the wash room billboard company and kept conveniently losing the
custom-made screwdrivers that opened the 400 plastic frames. Pretty
soon, a group calling themselves the Escher Appreciation Society
were breaking into the "student-proof" frames and systematically
replacing the bathroom ads with prints by Escher.